Engine.



I. K. JAEGER.

ENGINE.

APPLICATION FILED SEPT. as. 1915.

1 ,27 1 A7 1 Q Patented July 2, 1918.

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ENGINE.

APPLICATION FILED SEPT. 15. 1915.

1,271,471, Patented July 2,1918.

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J. K. JAEGER.

ENGINE- VAPF'LICATION FILED SEPT. 15. 1915.

1 ,2? 1 ,4? 1 Patented July 2, 1918.-

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U a r /vmeoom K J y e JONATHAN K. JAEGEB, OIE FENWQOD, SASKATCHEWAN, CANADA.

ENGINE.

Specification of Letters Patent.

Patented July 2, 1918.

Application filed September 15, 1915. Serial No. 50,847.

' 1 To all whom it may concern:

Be it lmown that I, JONATHAN K. J AEGER,

a subject of the King of Great Britain, re-

siding at Fenwood, in the Province of Saskatchewan, Dominion of Canada, have invented new and useful Improvements in Engines, of which the following is a specification.

This invention relates to internal combustion engines and more particularly to the control mechanism therefor and has for its primary object the provision of a structure wherein the exhaust valves are opened at predetermined intervals through the action of the piston rod, as the latter approaches its limit of travel in one direction.

' A further object of the invention is the provision of rotary means cooperating with the piston rod whereby the exhaust valve rods are given a reciprocatory motion at predetermined intervals.

A still further object of the invention is the provision of link mechanism under the control of the piston rod whereby the ex-' haust valves are returned to closed position subsequent to being opened by the rotary mechanism under the control of the piston rod.

The invention consists in the features of construction, combination, and arrangement of parts, hereinafter fully described and claimed, reference being had to the accompanying drawings, in which Figure 1 is a top plan view of my improved form of combustion engine.

Fig. 2 is a longitudinal section therethrough showing the pistons in elevation.

Fig. 3 is a side elevation. Fig. 4 is an end elevatlon. Figs. 5, 6, 7, and 8 are sectional views j through the valve controlled mechanism.

The cylinder is subdivided by a partition 3 into a pair of chambers 4 and 5.

Reciprocating within the chamber 1 is a piston 6 while reciprocating within the chamber 5 is a piston 7 both fixedly secured to a piston rod 8. Communication between the chambers of the cylinders and the interior of the tank 1 is had by means of the exhaust valves 9 and 10, the former communicating with the combustion chamber a and the latter communicating with the combustion chamber 6. Also communicating with the chambers are the intake valves 11 and 12 that communicate with any well known form of carbureter.

The inner end portion of the chamber 1 has communication with the interior of the tank by way of the pipe 13 provided with a valve 15 of a construction to allow rapid flow from the chamber 4: to the interior of the tank 1 but only allow a slow return.

From the arrangement above described, it will be understood that when the burned gas is exhausting from one of the combustion chambers, it passes by the respective exhaust valve into the tank 1 while suflioient air and burned gas combined passes through the pipe 13 into the chamber a behind the piston to assist in the return movement of both pistons and the piston rod. When an explosion occurs in the chamber a (see Fig. 2) the piston 7, and with it the piston 6, will be forced toward the right and as a result, an explosive charge will be drawn into the chamber 5. The valve in the pipe 13 allows the air and gas to flow rapidly from the chamber 1 to the tank 1 and to return slowly from the tank to the chamber 4 as the piston returns. As the piston makes its return movement, the burned gas is forced through the respective exhaust valve into the tank 1. The same operation just above described takes place with respect to the chamber 6, the explosions occurring alternately in the chambers a and b.

The piston rod 8 extends beyond one end wall of the cylinder and has its under surface provided with a rack bar 16 while connected to one end of'the rack bar 16 is a chain 17 engaging at one extremity the drum 18 secured upon a horizontally disposed shaft 19.

Cooperating with the shaft 19 is a coil spring 20, the resiliency of which opposes outward movement of the piston rod. Arranged to cooperate with the rack bar 16 is a mutilated gear 21, the teeth of which covers one-half the periphery of the gear. This mutilated gear is rigidly secured to a horizontal shaft 22 having its extremities journaled in bearings 23. Upstanding from a base 24:, the shaft 22 is formed with three crank arms 25, 26,- and 27, and bearing against said shaft are one or more horizon: tal leaf springs 28 (see Figs. 1, 3 and 4) by means of which the crank arms 25 and 26 are normally held at an incline with relation to the base 24.

Cooperating with the crank arms and 26 are vertical portions 29 and 30 of slide rods 31 and 32 (see Fig. 5). These slide rods are mounted to reciprocate in guides 32 and have their adjacent extremities formed with eyes 33 and 34 encircling the exhaust rods35 and 36 respectively. These 1 slide rod, and arranged between the springs and rigidly secured to an exhaust valve rod is a washer 39, arranged to cooperate with a keeper plate 40. Attention is called to the fact that while I have only described the structure for operating one of the exhaust valves, I wish it to be understood that the construction for the other. exhaust valve is identical. 7

The keeper plate 40 of the exhaust valve 9 and the keeper plate 41 of the exhaust valve 10 are connected by links 42 with a rod 43 that is pivotally connected with an arm 44.formed upon a shaft 45 that is further provided with an arm 46 disposed in the path of movement of a lug 47 secured upon the piston rod. The lug 47 and the lug 48, each of which is provided with a knuckle or hinge joint, are adapted to cooperate with the laterally extending pins 49 and 50 0n the mutilated gear 21.

' From the foregoing description, it will be seen that when a piston rod -moves outwardly, the rack bar engages 'the teeth of the mutilated gear 21 so as to give the shaft 22 a partial rotation for actuating one of the slide rods by one of the crank arms '25 or 26, for opening either one of theexhaust valves 9 or 10.. Simultaneously with this action, the. spring 20 is put under tension by thepiston exerting a pull upon the chain 17. As the crank arms 25 and 26 are dis posed 180. apart, the spring of one of the exhaust valve rods will be put under tension upon partial rotation of the shaft 22 through the action of the rack bar and gear. Upon compression of the springs, the washer 39 is forced past one of the keeper plates where it will be held against further movement until released by. the lug 47 striking the arm 46 thus giving the keeper plate a partial rotation for releasing the washer which allows the springs to regulate for opening the exhaust valve.

piston 55 against'the under surface of which the air pressure of the tank 1 acts. The piston 55 is inclosedby a cylinder 56 mounted on the base 24 under the arm 53 and as shown is provided with laterally extending lugs 57 through which pass screws 58 that engage a cross bar" 59 bearing upon a coil spring GO'thatencircles the piston rod and bears upon the piston 55. When the pressure in the tank 1 reaches a'predetermined maximum, the piston 55 will be forced upwardly against the tension of the spring for throwing the teeth 52 of the arm 53in the path of movement of the finger 51. When this takes place, the pistonswithin the cylinder are held against further movement until the pressure within the tank is reduced.

The apparatus is intended as a compressing pump designed to build up pressure in the tank 1 from which it may be used, for any power purposes desired. 'Theichamber 4 is intended to receive suificientpressure to partially balance the pressure in. either of the chambers a and b to allow thespring 20' to return the pistons 6 and 7 to the position shown in Fig. 2. The valve 15is a piston rod connected thereto, an exhaust valve for each chamber, means for allowing gas to enter saidchambers alternately, valve rods under the control of said piston rod for alternately opening said exhaust valves at predetermined intervals, springs encircling each of said valve rods and acting in opposition'to each other, means under the control of said piston rod'for compressing one spring through the compression of the other spring, and means for holdingl'said springs under compression for predetermined intervals. 1 7

2.-In combination, a cylinder having a fluid tight headbetween its-ends and 'combus'tion chambers at opposite sides of. said head, a piston working in each chamber, a piston rod connected thereto, an .exhaust valve for each chamber, means for allowing gas to enter said chambers alternately, valve.

at predetermined intervals, springs encircling each of said valve rods and acting in opposition to each other, means under the control of said piston rod for compressing one spring through the compression of the other spring, means for holding said springs under compression for predetermined intervals, a washer arranged on each valve rod and interposed between said springs, a second rod for contracting said springs, and means under the control of said piston rod cooperating with said washer for holding said spring under pressure.

3. In combination, a cylinder having a fluid tight head between its ends and combustion chambers at opposite sides of said head, a piston working in each chamber, a piston rod connected thereto, an exhaust valve for each chamber, means for allowing gas to enter said chambers alternately, valve rods under the control of said piston rod for alternately opening said exhaust valves at predetermined intervals, a rack bar secured to the under surface of said piston rod, a mutilated gear cooperating with said rack bar, a crank shaft upon which said mutilated gear is mounted, and means cooperating with said crank shaft for operating said exhaust valve.

In combination, a cylinder having a fluid tight head between its ends and combustion chambers at opposite sides of said head, a piston working in each chamber, a piston rod connected thereto, an exhaust valve for each chamber, means for allowing gas to enter said chambers alternately, valve rods under the control of said piston rod for alternately opening said exhaust valves at predetermined intervals, a rack bar secured to the under surface of said piston rod, a mutilated gear cooperating with said rack bar, a crank shaft upon which said mutilated gear is mounted, means cooperating with said crank shaft for operating said exhaust valve, and resilient means for holding the crank portion of said shaft nor mally in an inclined position.

5. In combination, a cylinder having a fluid tight head between its ends and com bustion chambers at opposite sides of said head, a piston working in each chamber, a piston rod connected thereto, an exhaust valve for each chamber, means for allowing gas to enter said chambers alternately, valve rods under the control of said piston rod for alternately opening said exhaust valves at predetermined intervals, a rack bar secured to the under surface of said piston rod, a mutilated gear cooperating with said rack bar, a crank shaft upon which said 1 mutilated gear is mounted, slide rods cooperating with the crank portions of said shaft and other rods connected to said exhaust valve and having resilient connection with said said slide rods, and resilient means for holding the crank portion of said shaft normally in an inclined position.

In testimony whereof I affix my signature inpresence 0 two witnesses.

JONATHAN K. J AEGER.

Witnesses:

H. P. MANG, G. A. CoL UHoUN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. 0. 

